Remote test system and method for substation high frequency protection channel state

Abstract

The invention provides a remote test system and method for a substation high frequency protection channel state. The system comprises an automation measurement and control system which has already existed in a substation and is connected with a remote operation and maintenance station, and an existing high frequency protection device transceiver which is connected with the automation measurement and control system and is capable of receiving a remote control instruction, wherein a remote control loop of the automation measurement and control system is integrated with channel test points of the high frequency protection device transceiver. The method comprises the following steps: 1) giving a remote control test instruction: work personnel in the remote operation and maintenance station utilize a master station monitor to give the remote control instruction for carrying out high frequency protection channel state test to the transceiver of a high frequency protection device through the automation monitoring and control system in the substation, and the transceiver of the high frequency protection device displays on-site test results on a test instrument in a instrument indicating manner; and 2) returning the test results and monitoring display: pictures of the test results are returned to the master station monitor of the remote operation and maintenance station through a message picture system and through a camera configured in front of the test instrument.

Description

technical field [0001] The invention relates to a remote testing system and method for the state of a substation high-frequency protection channel, and belongs to the technical field of testing and monitoring of power system equipment operation. Background technique [0002] The 220kV substations of the power system all adopt the unattended mode, and the high-frequency protection devices widely used in the 220kV power system, due to their early design period, although their transceivers are in good condition, they do not have the remote test function of the channel, often Operators need to drive to each substation for on-site testing. [0003] According to the relevant regulations made by the State Grid Corporation, in order to ensure the normal operation of the high-frequency protection channel of the substation, the operation of the high-frequency channel needs to be tested once a day, while the daily inspection of other equipment in the substation only needs to be carried...

AI Technical Summary

Problems solved by technology

[0002] The 220kV substations of the power system all adopt the unattended mode, and the high-frequency protection devices widely used in the 220kV power system, due to their early design period, although their transceivers are in good condition, they do not have the remote test function of the channel, often Operators are required to drive to each substation for on-site testing

Images